Hair-spring-collet remover.



W. M. JONES.

HAIR SPRING COLLET REMOVER.

APPLICATION FILED mus 21,1916. RENEWED MAR 21,1919.

1,303,560, Patented May 13, 1919.

A an on n1 .unrrnn STATES PATENT onnron.

wrLLrnM vr. JONES, or c'nnco'rnn, OKLAHOMA.

nun-srnrne-connnr REMOVER.

Patented May 13, 1919.

Application filed June 27, 1916, Serial No. 106,201. Renewed March 21, 1919. Serial No. 284,174.

To (ZZZ whom it may concern: I

Be it known that I, WILLIAM M. J ones, a citizen of the United States, and a resident of Checotah, in the county of McIntosh and State of Oklahoma have invented a certaln new and 'useful flair Spring Gollet Remover, of which the following is a specification, reference being had to the accompanying drawings. I 1

his invention relates to an improvement in watch-makers instruments and comprises a device forexpeditiously removing a hair spring collet from its staff.

The object of the invention is to provide a simply constructed, positively operating in-. strument by means of which a hair spring collet can be removed from its stafi without in any way damaging the hair spring. y

A further object is to provide a hair Spring collet remover of a simple and inexpensive nature and of a compacta'nd durable construction andwhichis so constructed as to facilitate the removaljofthe hair spring collet with ease, accuracy and despatch.

With these and other objects in view, the:

Figure-l shows atop VlBW of a hair spring collet remover embodying my invention dis closing a balance wheel in position.

Fig. 213 a sectional view through Fig. 1. Fig. 3 is a sectional view disclosing the spring fingers as raised. I V Fig. 4 isa transverse sectionalview.

Fig. 5 is aperspectiveview ofthe plunoer, V I b In my present invention I rovide a watch ma-kers instrument used .t e construction and repair of watches andproviding a means for holding the balance wheel of a watch in secure position in the operation of securing: a hair spring collet as well as providing a means for expeditiously removing thehair spring collet fromits stafi.

In carryingout the aim of my invention I employ abase plate formed with a middle lengthwise 1 extending aperture 1. This aperture as shown in the drawings is located near: one end of the base plate A and communicating with this aperture which extends entirely through the base plate is the groove 3. For the sake of convenience, this base plate A is mounted upon the legs 10.

'Secured approximately at mid-length of the aperture and upon opposite sides are two similar hook arms 2, 2, these hook arms havingtheir ends directed toward the grooved end of the plate. These hook arms 2, are ar ranged to receive the two arms a carrying the sector-shaped balance wheel portions to as is usual in the art. Passing through the union of the arms a is a staff it to which is secured a barrel B and a disk to, these instrumentalities being arranged against what formsthe under race of the arms a, while secured tothe staff a and upon the upper face of the arms is a hair spring collet C to which is secured the hair spring S. The operation of removing hair spring collet from its staff requires careful manipulation in order that no damage may be done the very delicate hair spring orstafi'. In my present invention, I provide a remover by means of which the collet may be forced off of the staif without any injury being done to the spring, no working effects coming into contact with the spring during the operation of removin the collet.

I Reciprocating and siding within the groove 3 is a plungert this plunger having at what forms its inner end a slit 5'as shown in Fig.5, this slit endbeing transversely reduced to a width slightly less than the width ofthe groove 3 and also-being vertically attenuated as shown in Fig. 5, to provide two spring fingers 11. As shown, each of these spring fingers 11 ends in a rectangular upstanding chisel-e ged ear 6. Each ear 6 has its inner face 7 cut away to provide a V- shaped seat communicating with the slit 5.

ger a is of such a length that the collar 8 serves as a stop, limiting the incursion of resilient locking stem 20.

, edge of the base the fingers 11 so that the inward movement. of the plunger will stop at a POlIltJllSt before the outer faces 7 of the ears 6 contact with the balance wheel arms a as shown in.

' pressed downward.-

Extending transversely through the base A andia't a point communicatingwith the aperture 1 isa cam shaft 12 having the cam 13, the shaft 12 being operatediby means of the handle15. As shown in Fig. 2 the cam 13 has a face 14 which in one of its positions ends in a plane coinciding with the bottom of the groove 3 so that the face 14 forms in.

effect a continuation of the bottom of the groove'3.

fingers when said fingers areadvanced.

This cam 13 is at a point below the spring- The projection of the plunger 4 islimitedbymeans of the end-e of the spring 17 whiclr comes into contact ears 6.

In'order to provide a means for holding the cam-face14 in alinement with the-bottom of. thejgroove, I provide a detent comprising a U shaped spring wire member 19 from which extends an upwardly extending This locking stem 20 ata suitable point has aseat 24- as shown in Fig. 4 into whichthe handle 15 springs. In bringing the handle 15 into engagement with-theresilient locking stem 20 this stem with the upstanding 20is forced inward, a seat 23 beingprovidedin the base A as shown in Fig. 1. By means ofthis s'eat- 24: the cam 13 may be securely held in proper alinement. The stem 20 is providedwithan upward. stop end 21 limiting theupward movement of the handle 15. The downward movement of the handle is checked by the spring 17 which limits the-- upward movement of the spring fingers.

While in use, as shown in Figs. 1,2, 3, and- 4, the base upon which the instrument rests would serve. as. a stop limiting the downward movementofthe handle 15. If the handle 15 is carried beyond the lower end of thelegs 10'the keeper spring 17 acts as a'stop.

The shaft 12 is-held in positionby means of a.w-a'sher- 22- which is interposed between the flanged-end 25 of the shaft l2 andthe plate A, as shown in Fig. 4. As shown in. Fig. 4 the washer 22 is normally held against the outer face of the base A. by means of the handle 15, which is in 00, so that after being inserted the staff a will be in alinement with the slit 5 within the plunger. O11 advancing the plunger 4, the faces 7- of-the'ears 6 come into engagement with the arms a and force the arms outward under. the hook arms 2. These. hook arms then stop the outward movement of the arms. At the same time, the chisel edged ends of the: ears-will: have been forced under.

thetcollet: and against. the. upper face of the arms a. The ears 6 are then raised in tilting the handle'15 downward which actuates the cam 13 and raises the spring lingers 11 in lifting the collet off entirely from the stalf u, as shownin F ig. 3.

Fig. .2- shows the ears in position just previous to raising. the fingers.

As: explained, the fingers are spread when they engage the staff a so that these fingers tightly claspthe staff 14 while being raised.

In referr1ngtoFigs2 and 3, it will be noticed that the end e of the spring extension 17 ends at apoint. outside the outer periphery of the wheel sectors w, so that in withdrawing the plunger 4 the inner faces of the ears 6 engage-thewheel to remove the stem from below the hook arms 2.

A- collet remover constructedaccording to my invention isinexpensive and positive in operation and a: collet may be expeditiously removed from its staff without in any way injuring the balance wheel parts of the hair spring.

1 Having thus described my said invention, what Irelaim-ascne'w and desire'to secure'by U. S. Letters Patent is I. The combination with a base, of a plunger slidably held to saidibase, ending in two spring fingers terminating in chiseledgied ears, means to hold said: plunger to said base, and means'for raisingsaid' spring fingers.

2; The combination with a base having an aperture with a groove communieatingwvith said aperture, of a plunger within said groove ending; in: two spring; fingers held within said aperture,- each sprlng 1 finger terminating in a chisel-edged ear, means to hold-saidplunger tosaid'groovc, and means for raising said spring fingers.

3. The combination witlrabase having. an aperture with a roove 'communicatingwith said aperture, oil a plunger within said groove ending, in two spring fingers held withinsaid aperture, each sprmg finger ter minating in a cl'iiseleedged ear,- means to hold said plunger to said groove, means for raising said spring fingers, and means for limitin the withdrawal of said plunger.

4:. T e combination with a base having an aperture with a groove communicating with said aperture, of a plunger within said groove ending in two spring fingers held within said aperture, each spring finger terminating in a chisel-edged ear, means to hold said plunger to said groove, means for raising said spring fingers, and means for limiting the rojection of said plunger.

5. The com ination with a base having an aperture with a groove communicating with said aperture, of a plunger within said groove ending in two spring fingers held within said aperture, each spring finger terminating in a chisel-edged ear, means to hold said plunger to said groove, means for raising said spring fingers, means for limiting the withdrawal of said plunger, and means for limiting the projection of said plunger.

6. The combination with a base having an aperture with a groove communicating with said aperture, of a plunger within said groove endmg in two spring fingers each spring finger terminating in a chisel-edged ear, a cam for raising said fingers, and

means for determining the position of said cam.

7 The combmation with a base having an aperture with a groove communicating with said aperture, of a plunger W1tl1111 said groove ending in two spring fingers each spring finger terminating in a chisel-edged ear, a cam for raising said fingers, means for determining the position of said cam, means for limiting the withdrawal of said plunger,

by said base for holding said balance wheel, a plunger slidably held to said base ending in two spring fingers each terminating in a chisel-edged ear arranged to be brought below said collet, and means for raising said spring fingers.

9. The combination with a base, having a middle lengthwise extending aperture with a communicating groove, a plunger bar sliding Within said groove terminating in two attenuated transversely reduced spring fingers each ending in an upstanding rectangular chisel-edged ear, said fingers extending partly across said aperture, the inner faces of said ear being cut away to provide a V-shaped seat communicating with the slit between said fingers, an operating head at the end of said plunger limiting the projection of said plunger, a cam shaft having a cam located below said spring fingers, and a spring to force said fingers into engagement with said cam and hold said plunger within said groove, saidcam on being rocked raising said fingers, as, and for the purpose set forth,

In testimony whereof I aflix my signature, 1n the presence of two witnesses.

WILLIAM M. JONES.

Witnesses:

W. L. WOOD, JAYPIEROE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

